The product is high-efficient ,cheap and nontoxic inorganic high molecular compound .It's easily soluble in water .In the hydrolytic process ,it is accompanied with the chemical processes such as electrochemistry ,coagulation ,absorption and precipitation .The product has the features inculding wide applicable range of PH value ,large granule ,and quick speed in sedimentation .It's widely used in treating the domestic drinking water ,domestic sewage and industrial waste water .